Inlined implementation for os_event_*. More...

Functions
template<typename Condition >
static Wait_stats	os_event_wait_for (os_event_t &event, uint64_t spins_limit, std::chrono::microseconds timeout, Condition condition={})
	Waits in loop until a provided condition is satisfied. More...

Detailed Description

Inlined implementation for os_event_*.

Function Documentation

template<typename Condition >

static Wait_stats os_event_wait_for	(	os_event_t &	event,
		uint64_t	spins_limit,
		std::chrono::microseconds	timeout,
		Condition	condition = `{}`
	)

inlinestatic

Waits in loop until a provided condition is satisfied.

Combines usage of spin-delay and event.

Remarks: First it uses a spin loop with PAUSE instructions. In each spin iteration it checks the condition and stops as soon as it returned true.

When a provided number of spin iterations is reached, and the condition still has not returned true, waiting on a provided event starts.

Each wait uses a provided timeout. After each wake-up the condition is re-checked and function stops as soon as the condition returned true.

Every k-waits (ended on wake-up or timeout), the timeout is multiplied by two (but it's limited up to maximum value of 100ms).

Parameters

[in,out]	event	event on which function may wait
[in]	spins_limit	maximum spin iterations
[in]	timeout	initial timeout value
[in]	condition	returns true when condition is satisfied